Search M4 Traffic.co.uk
Welcome to the M4 traffic search news page.
Helping you find the latest M4 traffic news and updates.
We hope that the traffic news will help you avoid traffic jams and roadworks.
Our traffic news is designed to provide you with traffic news in a clear and informative way.
You can use the filter options below to find the latest traffic news for the M4 journey you are planning to take.
20 matching items - showing 1-10 of 20 total available news items
M4 eastbound between junctions J13 and J12: broken down vehicle
12:57 (12:57pm)20 Oct 2026reported 5 min ago
- Location
- M4 eastbound between junctions J13 and J12
- Direction
- Eastbound
- Lanes closed
- There are two of three lanes closed. The hard shoulder, lanes one and two are closed
- Reason
- Broken down vehicle
- Schedule
- 12:39 (12:39pm) Tue 20 Oct 2026 → 13:35 (1:35pm) Tue 20 Oct 2026
Hardshoulder closure
12:26 (12:26pm)20 Oct 2026reported 36 min ago
- Location
- M4 eastbound between J17 and J16
- Direction
- Eastbound
- Lanes closed
- Hard shoulder closed
- Reason
- Roadworks
- Schedule
- 23:59 (11:59pm) Tue 27 Apr 2021 → 18:00 (6pm) Fri 30 July 2027
M4 eastbound within J13
12:55 (12:55pm)20 Oct 2026set 6 min ago✓ Checked by us 13:02 (1:02pm)
Speed Signal
M4 westbound between J4 and J4B
12:53 (12:53pm)20 Oct 2026set 8 min ago✓ Checked by us 13:02 (1:02pm)
Speed Signals · 2 signals
M4 eastbound within J4B
12:53 (12:53pm)20 Oct 2026set 8 min ago✓ Checked by us 13:02 (1:02pm)
Speed Signal
M4 westbound within J4B
12:53 (12:53pm)20 Oct 2026set 8 min ago✓ Checked by us 13:02 (1:02pm)
Speed Signal
M4 westbound between J19 and J20
12:51 (12:51pm)20 Oct 2026set 10 min ago✓ Checked by us 13:02 (1:02pm)
Speed Signals · 2 signals
M4 westbound between J19 and J20
12:51 (12:51pm)20 Oct 2026set 10 min ago✓ Checked by us 13:02 (1:02pm)
Speed Signals · 3 signals
M4 eastbound between J13 and J12
12:51 (12:51pm)20 Oct 2026set 10 min ago✓ Checked by us 13:02 (1:02pm)
Speed Signal
M4 eastbound Jct 13 between the slips carriageway closure
12:26 (12:26pm)20 Oct 2026reported 36 min ago
- Location
- M4 eastbound between J14 and J13
- Direction
- Eastbound
- Lanes closed
- Carriageway closed
- Reason
- Roadworks
- Schedule
- 21:00 (9pm) Tue 20 Oct 2026 → 06:00 (6am) Wed 21 Oct 2026
Forecast - not confirmed
Updated 13:02 (1:02pm) Tue 20 Oct 2026
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How to find the latest M4 traffic news
Our live M4 feed updates throughout the day with the latest reports on delays, roadworks, accidents, closures and congestion along the M4 motorway. Search by junction number and direction — eastbound or westbound — to focus on the stretch you’re travelling, whether that’s the M25 interchange at Junction 4b, the Severn crossing, the M5 at Almondsbury, or the run into Cardiff and Swansea. A quick check before you leave can save you sitting in avoidable traffic.
Why M4 traffic news changes along the motorway
The Department for Transport counts M4 traffic hour by hour and end to end. What it shows is that the latest M4 news means something different depending on where you are joining the motorway today.
156,491
M4 vehicles a day
at the busiest point, junction 4 by Heathrow — the London commuter end of the M4, where 81% of the traffic is cars.
128,594
a day at Bristol
on the M4 at the M4/M5 interchange — fewer vehicles, but 11,167 lorries and 24,926 vans. The same motorway, carrying a very different kind of traffic.
32%
the M4 rush-hour swing
between the busiest M4 hour (7am) and the quietest (11am) at junction 4. The M4 has a genuine peak, so timing your journey actually helps here.
81
M4 count points
measure this motorway from London to South Wales. It is one of the most closely watched roads in the country, and every M4 accident, delay and roadworks report we publish comes from that network.
So an M4 delay at junction 4 and an M4 delay at junction 19 are not the same problem. That is why this page carries all the latest M4 traffic news together — accidents, crashes, roadworks and lane closures — so you can find the ones on your stretch of the M4 motorway today rather than reading about somebody else’s.
Hourly figures are from the Department for Transport’s own M4 count point beside junction 4, counted on 3 September 2025, published 20 May 2026. Daily figures are Average Annual Daily Flow for 2025.